Although the memory can be installed one module at a time, the best performance comes from using matched pairs of modules.
Each memory slot can hold DDR PC2700,DDR PC3200 with a maximum of 1GB per slot.*
*Not to exceed manufacturer supported memory.

How much memory your Windows OS will recognize
depends on which version of Windows you are running. 32-bit versions of
Windows will see (and utilize) only 3GB or 3.5GB. To utilize more
memory, install a 64-bit version of your OS.The maximum amount of memory that your system can
use is actually limited in two ways — not only is there a maximum
amount of memory that your computer motherboard can accept, there is
also a maximum amount of memory that your operating system (OS) can
accept.

For instance, when you install 4GB of memory in a 32-bit Windows
system (the most common version; 64-bit systems are typically used only
by high-end users), your system will see (and utilize) only 3GB or
3.5GB. Is the problem bad memory?

Relax, there isn't a problem with the memory. Windows allows for
4GB of memory to be addressed, but this isn't 100 percent the same as
having 4GB of physical memory.

What happens is that some of the addressable memory (regardless of
how much you have physically installed) is reserved for use by page
files or by some of the devices that you are using, such as a graphics
card, PCI card, integrated network connections, etc., so it's
unavailable for use as normal main memory.

The amount of memory needed for these devices is calculated by your
system at startup; if you haven't maxed out the memory in your system,
it's invisible to you, and all your physical memory (the RAM that's
installed) is available for use. However if you've maxed out the DRAM
in your system, this amount will be deducted from your physical memory,
so you can't use 100% of your DRAM.

for graphics card you can go for 8800GT , it's more than double the performance of a 9400GT, but it's also much more expensive the second digit represents the speed .hope this will help you pls appreciate by rating as fixyaa

for graphics card you can go for 8800GT , it's more than double the performance of a 9400GT, but it's also much more expensive the second digit represents the speed .hope this will help you pls appreciate by rating as fixyaa

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that board uses a pcix vid card go here and select any of these or buy one from where ever you want. make sure it is a pci express (pcix) card not a pcix 2.0 your mobo does not support the 2.0 cards.http://www.tigerdirect.com/applications/Category/guidedSearch.asp?CatId=28&sel=Detail;55_158_13067_13067
a little advise if you want to paly serious games you will want at LEAST a geforce 6800 or gretaer card. an excellent gaming card for the money is a 9800 gtx about $100 or so look here:http://www.tigerdirect.com/applications/SearchTools/search.asp?keywords=9800+gtx
you do not need the 3d cards they are expensive just look at #3 in that list. a good card for decent price. i personally use a xfx 9800 gtx to game with. no problems and most games can have the grphics turned right up. where you will run into trouble is with your single core pntium 3.2. that will limit how much you can turn everything up as some of the graphics options for games are controlled by the processor believe it or not. but still i would get a 9800 gtx if it were my system

No. DDR replaced the SD in RAM so SDRAM and DDR RAM are two completely different things but each ram type has its own frequency hence you get SDRAM 100(mhz) and SDRAM 133(Mhz) just like you get DDR 1 RAM at 266(mhz) and 400(mhz) and DDR 2 RAM at 533(mhz) and 800(mhz). Therefore as you can see how these things differ, but if your mboard takes SDRAM that it can take and frequency of SDRAM but you must ensure that all the frequencies of all your RAM modules in all your slots correspond otherwise you will have problems, meaning that if you decide to use 133mhz RAM then all your RAM modules that you use must be the same. Let me know how you go. thanks